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We consider a general symmetric (3x3) mass matrix for three generations of neutrinos. Imposing the constraints, from the atmospheric neutrino and solar neutrino anomalies as well as from the CHOOZ experiment, on the mass squared differences and on the mixing angles, we identify the ranges of allowed inputs for the 6 matrix elements. We apply our results to Majorana left-handed neutrino masses generated...
We consider neutrino masses generated at tree level and at one loop, through fermion-sfermion loop diagrams, in the MSSM with R-parity violation. Using the (3x3) mass and mixing matrices for three generations of neutrinos and the present experimental results on neutrinos from laboratories and astrophysics simultaneously, we put bounds on both trilinear (λ ijk ,λ' ij ...
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